Ever the people’s champion, Jake Rodkin from Telltale Games has posted a whole bunch of Devil’s Playhouse concept up over on their forums, including the development of the Narrator’s appearance and a closer look at all the props used in the museum.
The concepts were drawn by artist Ryan Jones and were sadly excluded from the DVD. Do not fear though, as they will be archived over on the site’s season three page in high resolution quality for ever more.